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CVE IDCVE-2020-29582GitHub advisory IDGHSA-cqj8-47ch-rvvq

Incorrect Default Permissions in JetBrains Kotlin

CVE-2020-29582 (GitHub advisory GHSA-cqj8-47ch-rvvq) is a medium-severity vulnerability with a CVSS 3.1 base score of 5.3, classed as Incorrect Default Permissions (CWE-276), in org.jetbrains.kotlin:kotlin-stdlib (Maven). Affected versions: <= 1.4.20. It is fixed in 1.4.21.

Medium5.3Fix availableGitHub reviewed

Published 3 Feb 2021Updated 4 Aug 2024

5.3MediumCVSS 3.1
CVE ID
CVE-2020-29582
GHSA ID
GHSA-cqj8-47ch-rvvq
EPSS
2.57%higher than 84% of CVEs
Weakness (CWE)
  • CWE-276Incorrect Default Permissions
KEV status
Not in KEV
Published
3 Feb 2021
Updated
4 Aug 2024
Ecosystem
  • Maven
Assigned by (CNA)
mitre

Summary

Source: OSV (GitHub advisory)

In JetBrains Kotlin before 1.4.21, a vulnerable Java API was used for temporary file and folder creation. An attacker was able to read data from such files and list directories due to insecure permissions.

Technical details

Source: GitHub Advisory Database

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Medium5.3Base score from GitHub Advisory Database

Attack Vector AV
Network
Attack Complexity AC
Low
Privileges Required PR
None
User Interaction UI
None
Scope S
Unchanged
Confidentiality C
Low
Integrity I
None
Availability A
None

Affected packages

Source: OSV (GitHub advisory)

  • org.jetbrains.kotlin:kotlin-stdlib
    Maven
    pkg:maven/org.jetbrains.kotlin/kotlin-stdlib
    Affected versions
    <= 1.4.20
    Fixed in
    1.4.21
    Show 148 listed versions
    • 0.0.1-test-deploy
    • 0.0.2-test-deploy
    • 0.10.1316
    • 0.10.195
    • 0.10.4
    • 0.10.709
    • 0.10.770
    • 0.11.91
    • 0.11.91.1
    • 0.11.91.2
    • 0.11.91.4
    • 0.12.1218

Fix

Source: OSV (GitHub advisory)

Fix available

Upgrade to 1.4.21 or later.

Vulnerability intelligence

References

Questions about CVE-2020-29582

What is the GHSA ID for CVE-2020-29582?
GitHub tracks CVE-2020-29582 as GHSA-cqj8-47ch-rvvq.
What is the CVSS score of CVE-2020-29582?
CVE-2020-29582 has a CVSS 3.1 base score of 5.3 (Medium), vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
Which versions are affected by CVE-2020-29582?
org.jetbrains.kotlin:kotlin-stdlib (Maven): <= 1.4.20.
How do I fix CVE-2020-29582?
Upgrade to 1.4.21 or later.
What is the Package URL (PURL) for CVE-2020-29582?
The affected package's PURL is pkg:maven/org.jetbrains.kotlin/kotlin-stdlib.
Is CVE-2020-29582 exploited in the wild?
CISA's Known Exploited Vulnerabilities catalog doesn't list CVE-2020-29582. That means no confirmed exploitation has been catalogued, not that it is safe to leave unpatched. EPSS estimates a 2.57% chance of exploitation in the next 30 days, higher than 84% of CVEs.

Data sources

Upstream records

  • OSV (GitHub advisory)LoadedRaw JSON
  • GitHub Advisory DatabaseLoadedRaw JSON
  • OSV (CVE record)LoadedRaw JSON
  • CVE.orgLoaded
  • CISA KEV catalogLoaded

Fetched 2 days ago (13 Oct 2026, 13:31 UTC). Records refresh automatically after 24 hours.

Where each part of this page came from

Title and description
OSV (GitHub advisory)
Severity score
GitHub Advisory Database
Weakness (CWE)
GitHub Advisory Database
Affected packages
OSV (GitHub advisory)
Fix
OSV (GitHub advisory)
References
Computed by CVEminer
KEV status
CISA KEV catalog
EPSS
GitHub Advisory Database

OSV and GitHub Advisory Database content is licensed CC BY 4.0. Values marked as computed or derived were calculated by CVEminer from the upstream data.